{"id":5436,"date":"2013-05-20T14:41:41","date_gmt":"2013-05-20T14:41:41","guid":{"rendered":"https:\/\/www.gsma.com\/about-us\/regions\/latin-america-and-the-caribbean\/?p=5436"},"modified":"2013-12-11T20:12:03","modified_gmt":"2013-12-11T20:12:03","slug":"roaming-lte-networks","status":"publish","type":"post","link":"https:\/\/www.gsma.com\/about-us\/regions\/latin-america-and-the-caribbean\/roaming-lte-networks\/","title":{"rendered":"Enabling Roaming across LTE networks"},"content":{"rendered":"

\"\"<\/a>By Matthew Tonkin, Global Head, IPX Business, SAP Mobile Services<\/strong><\/em><\/p>\n

Once again the mobile industry is entering a new phase of technological change. With the proliferation of data services and smartphones, the mobile operator community is working to address the increasing need for bandwidth with the rollout of next generation 4G networks, known as LTE networks. This development will pave the way to full IP convergence, enabling mobile operators to accelerate the time-to-market for new services that drive customer satisfaction and generate new revenues.<\/p>\n

As operators launch LTE services in their home markets, consumers will naturally expect the same quality experience everywhere \u2014 especially when they are abroad.<\/p>\n

In view of this requirement mobile operators that deploy LTE networks in their domestic markets are starting to review options available to ensure LTE services allow seamless roaming overseas. The first users of LTE will typically be VIP customers or key corporate accounts, a segment made up of high-end users and frequent travelers. To serve these premium customers operators will need to address LTE Roaming requirements sooner, rather than later.<\/p>\n

Prepare for roaming<\/strong><\/p>\n

LTE will enable new services such as video streaming, HD voice and Voice over LTE applications. However, these services will also put high demands on the data roaming backbone and require much more bandwidth and resilient network connectivity. As mobile operators review their LTE Roaming connectivity options, they will need to consider the following business and technical factors in preparation to enable LTE Roaming:<\/p>\n

1. Diameter Signaling<\/strong>
\nThe build out of high-speed LTE networks is different from the technologies that preceded it. LTE requires a completely new signaling protocol. Put another way, SS7 MAP\u2014 which has been the rule for 2G \/ 3G mobile networks \u2014 is no longer needed. A new signaling protocol has been introduced, called Diameter.<\/p>\n

2. New Roaming Connectivity<\/strong>
\nIn a roaming environment, the existence of this new protocol will require mobile operators to establish new roaming connections. As operators launch LTE networks over the coming years, new roaming connectivity will be required with each new operator. Effectively, the work performed over the last 10 years will need to be repeated.<\/p>\n

3. Diameter Relay Agent<\/strong>
\nTo enable this connectivity, operators will require a Diameter Relay Agent (DRA). In the initial build out of LTE networks, the majority of mobile operators have not deployed a DRA into their networks. Operators are facing challenges of the immediate business requirements to enable LTE Roaming versus the need to obtain CapEx budget approvals to acquire the required DRA equipment.<\/p>\n

4. An IPX Provider<\/strong>
\nIt is widely accepted that LTE Roaming with Diameter signaling will be connected across IPX networks. As LTE Roaming proliferates, there will be a need for IPX providers to enable peering both at the data level and at the signaling level. Consideration will also be needed to ensure Quality of Service (QoS) SLAs are implemented.<\/p>\n

Important choices<\/strong><\/p>\n

In the new LTE world, mobile operators will have a choice: they can work with LTE Roaming hubs, or they can directly connect with mobile operators.<\/p>\n

\"\"<\/p>\n

The hubbing concept is not new to the industry. There is a wide variety of these \u2014 including iSMS hubs, iMMS hubs, roaming hubs and clearing hubs \u2014 and all fulfill a similar role. Depending on the operator requirements, hubbing allows them to reach operators with one-to-many connectivity, reduce efforts and testing time, accelerate time-to-market for services and facilitate transaction settlements between operators.<\/p>\n

In the LTE Roaming environment, mobile operators can connect to an LTE Roaming hub, a hub that will also facilitate connectivity to the wider operator community made up of operators that also connected to the same hub.<\/p>\n

To facilitate active deployment for mobile operators, the LTE Roaming hub will also need to provide an outsourced DRA capability running on the hub itself. Operators have the option to utilise this outsourced DRA capability immediately to connect to roaming partners.<\/p>\n

This may sound easy, but, as the industry has experienced through operator trials, interworking with suppliers\u2019 DRA equipment can be challenging. Whilst specifications are defined for the Diameter protocol, unique supplier variations are evident and require mapping to enable seamless interworking.<\/p>\n

In the initial stages of LTE Roaming deployments, it is likely operators will use their connection to an LTE Roaming hub to facilitate LTE Roaming. The business benefits delivered by this approach are as follows:<\/p>\n

    \n
  1. Immediate time-to-market<\/strong>. This equips operators to deliver an immediate service to their high-value customers.<\/li>\n
  2. Cost effectiveness<\/strong>. Whilst LTE roaming capability will be key, network rollouts will take time and the number of roaming users to start will be low. Mobile operators can monetise their initial rollouts through an LTE Roaming Hub.<\/li>\n
  3. Technical readiness<\/strong>. Many operators are missing a key technological component, the Diameter Relay Agent. An LTE Roaming hub \u2014 which offers an outsourced DRA capability \u2014 will enable operators to move forward with an LTE roaming solution.<\/li>\n<\/ol>\n

    As the market matures, LTE revenues proliferate, and the necessary network equipment is deployed, mobile operators will also have the option to connect directly with each other. As in today\u2019s hub environments, it’s likely that mobile operators will connect directly to key operator partners and roaming destinations. Other operators will pursue a dual strategy for LTE Roaming. Connecting directly to key roaming partners, and also work with LTE Roaming hubs to access the community. No doubt there will also be some operator groups that operate their own hub, with a lead operator sponsoring the hubbing capability and enabling connectivity across the group.<\/p>\n

    Incorporating the roaming hub principles, an LTE Roaming hub running over the IPX network will enable and ensure the rapid rollout of LTE Roaming for the operator community. The IPX network will also deliver the bandwidth and network resiliency demanded by consumers.<\/p>\n

     <\/p>\n

    Matthew Tonkin is Global Head, IPX Business for Sybase 365, a subsidiary of Sybase, Inc., an SAP company. Mr. Tonkin oversees the company\u2019s global GRX\/IPX\/LTE Roaming business and helps drive pipelines and revenues with local teams in every region. In addition to his global IPX role, in Asia, Tonkin is responsible for managing and driving the company\u2019s growth and market leadership in both Enterprise Services and Mobile Operator Services businesses across the region, through a combination of direct sales and a partner & alliances sales network.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

    By Matthew Tonkin, Global Head, IPX Business, SAP Mobile Services. Once again the mobile industry is entering a new phase of technological change. 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